“All actions have reactions,” says one guest on the podcast Heavyweight. In each episode, host Jonathan Goldstein discusses moments from people’s pasts that continue to haunt them and attempts to resolve (or at least learn from) these experiences in some way. In the episode “Julia,” for example, a woman who was bullied in her youth decides to get in touch with her old classmates to get to the bottom of a particular incident. Is there a buried experience from your own past that deserves some consideration? This week, write an essay about a past experience that has impacted you, perhaps a mystery, a grievance, or an argument. You may choose to write about what happened and its significance, or you may want to take the exercise a step further and write directly to someone.